Questions & Answers
Carbon steels (according to GOST 380-2005): St3Gsp, St3Gps, St3sp, St3ps, St3kp, St2sp, St2ps, St2kp, St1sp, St1ps, St1kp, St0.
Low-alloy steels (according to GOST 19281-2014): 15KhSND, 10G2S1, 10G2S, 17G1S-U, 17G1S.
Structural steels (according to GOST 1050-2013): 45, 40, 35, 30, 25, 20, 15, 10, 08.
Steels for electric-welded pipes (according to GOST 10705-80): 20, 10, St3, St2.
General specifications:
GOST 13663-86 — main quality standard;
GOST 1050-2013 — material;
GOST 380-2005 — material.
Assortment (dimensions and shape):
GOST 8639-82 — used as a general profile standard;
GOST 8645-68 — equivalent for shaped pipes;
GOST 8642-68 — includes similar standard sizes;
GOST 8644-68 — main standard for flat oval pipes.
International equivalents:
ASTM A500;
EN 10210;
DIN 2395;
EN 10219.
Standards for blanks:
GOST 8734-75;
GOST 10705-80;
GOST 10704-91;
GOST 8732-78.
| Size (AхB), mm | Wall (S), mm | Weight of 1 m, kg |
| 16х10 | 1,0 - 1,5 | 0,3 - 0,45 |
| 20х10 | 1,0 - 1,5 | 0,35 - 0,52 |
| 20х15 | 1,0 - 1,5 | 0,4 - 0,6 |
| 25х10 | 1,0 - 2,0 | 0,45 - 0,7 |
| 30х15 | 1,0 - 2,0 | 0,6 - 0,95 |
| 32х16 | 1,0 - 2,0 | 0,65 - 1,05 |
| 40х20 | 1,0 - 2,0 | 0,85 - 1,4 |
| 50х25 | 1,5 - 2,0 | 1,4 - 1,8 |